AutoCodes – Chevrolet – P16FF 2018 Chevrolet Silverado

P16FF 2018 Chevrolet Silverado Code - Engine Controls Ignition Relay Request Signal Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Engine Controls Ignition Relay, Engine Controls Ignition Relay harness is open or shorted, Engine Controls Ignition Relay circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P16FF 2018 Chevrolet Silverado indicates Engine Controls Ignition Relay Request Signal Message Counter Incorrect.
Common causes
Common causes include Faulty Engine Controls Ignition Relay, Engine Controls Ignition Relay harness is open or shorted, Engine Controls Ignition Relay circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 209
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 29, 2022
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Code P16FF 2018 Chevrolet Silverado Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Engine Controls Ignition Relay Request Signal Message Counter Incorrect.
OBDII Code P16FF 2018 Chevrolet Silverado - Engine Controls Ignition Relay Request Signal Message Counter Incorrect - AutoCodes.com
P16FF 2018 Chevrolet Silverado Code - Engine Controls Ignition Relay Request Signal Message Counter Incorrect

What are the Possible Causes of the DTC P16FF 2018 Chevrolet Silverado?

  • Faulty Engine Controls Ignition Relay
  • Engine Controls Ignition Relay harness is open or shorted
  • Engine Controls Ignition Relay circuit poor electrical connection

How to Fix the DTC P16FF 2018 Chevrolet Silverado?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P16FF 2018 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P16FF 2018 Chevrolet Silverado code?

Need more information on how to fix the P16FF 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16FF 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P16FF 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P16FF in a 2018 Chevrolet Silverado?

The common symptoms include engine misfires, rough idling, lack of power, and in some cases, the vehicle may not start.

2. What causes the OBDII code P16FF in a 2018 Chevrolet Silverado?

The code P16FF typically indicates an issue with the Engine Controls Ignition Relay Request Signal Message Counter being incorrect, which can be caused by a faulty ignition relay or a problem with the wiring.

3. How serious is the OBDII code P16FF in a 2018 Chevrolet Silverado?

While the code itself may not cause immediate harm to the vehicle, it can lead to poor engine performance and potential long-term damage if left unresolved.

4. Can I still drive my 2018 Chevrolet Silverado with the OBDII code P16FF?

It is not recommended to drive the vehicle with the code P16FF present, as it can affect engine performance and reliability. It's best to address the issue promptly.

5. How can I diagnose the OBDII code P16FF in my 2018 Chevrolet Silverado?

Diagnosing the code P16FF may require using an OBDII scanner to retrieve the specific error code, followed by inspecting the ignition relay and related wiring for any visible damage.

6. What are some repair tips for fixing the OBDII code P16FF in a 2018 Chevrolet Silverado?

Repair tips may include checking and replacing the ignition relay, inspecting and repairing any damaged wiring, and clearing the error code to see if the issue persists.

7. Can I reset the OBDII code P16FF in my 2018 Chevrolet Silverado by disconnecting the battery?

While disconnecting the battery may reset the code temporarily, it is not a recommended fix as the underlying issue causing the code will likely persist.

8. How much does it cost to repair the OBDII code P16FF in a 2018 Chevrolet Silverado?

The cost of repairing the code P16FF can vary depending on the exact cause of the issue, but it may involve replacing the ignition relay or repairing the wiring, which could range from moderate to high cost.

9. Will the OBDII code P16FF cause my 2018 Chevrolet Silverado to fail emissions testing?

Yes, the code P16FF can cause the vehicle to fail emissions testing due to its impact on engine performance and emissions control systems.

10. How can I prevent the OBDII code P16FF from appearing in my 2018 Chevrolet Silverado in the future?

Regular maintenance, such as checking and replacing worn out components like the ignition relay, can help prevent the recurrence of the code P16FF in your Chevrolet Silverado.

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